AC reed relay PTC

compact

P Series PTC Start Relays are compact components,ideally suited for the starting of hermetic compressors used in refrigerators, freezers and same commercial application. P relay incorporates a PTC (Positive temperature Coefficient) ceramic pellet with a low, controlled resistance value at ambient temperature, which allows the motor to start.After a short delay the PTC pellet increases its resistanceconsiderably, and reduces motor stating current to a very low value, which is anyway sufficient to keep the PTC relay in a non-operating condition as long as the motor is running. When the motor is switched off, after a cooling down period (typically 3 minutes at 25°C ambient temperature) the PTC pellet resistance decreases to its original low value. The relay is ready for another start.